Answer:
b. external
Explanation:
When an economical event affects something in an indirect way, it is called an <em>external change</em>. It is expected for the economic recession to affect economic factors of course. However, it is imminent that it affects every-day life among people too. Economic factors directly influence life and habits of the U.S. consumer, as it is common for most economic changes.
<span>Z will become eligible to receive benefits starting on March 1, since Z became disabled from an accident on February 1. </span>
I think it's most likely to be A.
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